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A kind of whitening toothpaste that stimulates redox reaction by visible light and preparation method thereof

A visible light and reaction technology, which is applied in the field of tooth whitening and toothpaste preparation, can solve the problems of poor whitening effect of reactant design, and achieve the effect of safe use, simple operation method, and mild yellow light

Active Publication Date: 2020-08-04
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical defects of the prior art, and provides a whitening toothpaste that stimulates redox reaction by visible light and its preparation method, so as to solve the problem of teeth bleaching by photocatalytic oxidation reaction in the prior art. Reasonable technical issues resulting in poor whitening effect

Method used

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  • A kind of whitening toothpaste that stimulates redox reaction by visible light and preparation method thereof
  • A kind of whitening toothpaste that stimulates redox reaction by visible light and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. The precursor solution is composed of 50mM zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), 80mM ammonia (NH 3 ·H 2 O) and 25mM hexamethylenetetramine (HMT) in 100ml of deionized water, cover the container with a lid and stir well for 10min until the solute is completely dissolved to clarification, and then set aside. In order to avoid pre-precipitation of the precursor solution, the order of delivery is NH 3 ·H 2 O, Zn(NO 3 ) 2 ·6H 2 O, HMT and the container is always sealed with a lid.

[0035] 2. When the temperature of the water bath reaches 65℃, put the lidded precursor liquid container into the water bath and ensure that it is fully immersed, and react for 15 minutes.

[0036] 3. Add 0.14g sodium citrate and 0.1g hydroxypropyl methylcellulose to the solution respectively, and put them in a water bath at 85°C to react for 12h.

[0037] 4. Put the obtained product into a vacuum freeze dryer, and after drying, put it into a household microwave oven to pyrolyze for 15 minut...

Embodiment 2

[0039] 1. Put 0.08g of nano titanium dioxide and 0.01g of dopamine hydrochloride into a 100ml Erlenmeyer flask, add 50ml of pure water, shake and mix;

[0040] 2. Add 0.1g hexamethylenetetramine, ultrasonically shake for 5min, seal the container and put it in a water bath at 90℃ for 3h;

[0041] 3. Wash the obtained product with pure water twice, then with absolute ethanol twice, and finally with pure water twice, put the product in a vacuum freeze dryer, and freeze-dry to obtain the finished product.

Embodiment 3

[0043] Dissolve the finished product in Example 1 in water, dip the solution with a toothbrush, turn on the LED yellow light, and brush your teeth for three minutes to see the whitening effect.

[0044] At the same time, the toothpaste prepared in Example 1 was used to treat the experimental teeth for different times. The treatment method was to soak the experimental teeth in the aqueous solution of the toothpaste prepared in Example 1 and irradiate them with LED yellow light. The experimental results are as follows figure 1 Shown.

[0045] Such as figure 1 As shown in the middle part b~d, after half an hour of treatment, there is obvious effect, and the stains of the alveolar are also well cleaned. It can be seen from the inset in the upper right corner of each of b~d. The teeth treated with the toothpaste of Example 1 have almost no bacterial growth on the surface, which can effectively inhibit the growth of oral bacteria. by figure 1 As shown in the middle part e~j, it can be s...

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Abstract

The present invention provides a kind of whitening toothpaste that stimulates redox reaction by visible light and its preparation method. The technical scheme uses zinc nitrate hexahydrate, ammonia water and hexamethylenetetramine as main raw materials, and then reacts with citric acid Sodium reacts with hydroxypropyl methylcellulose, and the product is freeze-dried and microwave-treated to obtain a finished product. The toothpaste product contains porous zinc oxide, which can quickly produce redox reactions on discolored teeth under the excitation of yellow light, and also has the following technical advantages: 1. Porosity and good adsorption effect. 2. It can respond to yellow light, and redox effect can occur without ultraviolet excitation. Because yellow light is milder and less irritating to eyes, it is safer to use. 3. The process is simple and safe, no need to add organic solvents, the operation method is simple, the requirements for equipment are not high, and it is suitable for large-scale production and industrialization.

Description

Technical field [0001] The invention relates to the technical field of toothpaste preparation, and at the same time to the technical field of tooth whitening, in particular to a whitening toothpaste in which a redox reaction is excited by visible light and a preparation method thereof. Background technique [0002] The color of teeth directly affects the image of the face, so tooth whitening has become a common beauty requirement. With the development of medical technology, a variety of restoration methods for discolored teeth have been formed in recent years, of which cover whitening and chemical bleaching are more used. universal. The main methods of covering and whitening include veneers and full crown restorations. Both of these methods require large-scale grinding of teeth, so they have irreversible damage to the structure of the teeth. The chemical bleaching method is relatively safe, but because it relies on chemical reactions, the reaction design is very important. If th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/27A61K8/02A61K8/19A61K8/49A61K8/365A61K8/73A61K8/29A61K8/41A61Q11/00
CPCA61K8/84A61K8/29A61K8/41A61Q11/00A61K2800/82A61K2800/84A61K2800/81
Inventor 王小磊辛洪波余芬廖岚张凤
Owner NANCHANG UNIV
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